Horizontal Alignment Tools
Road planning is divided into several stages. It begins with the horizontal alignment, continues with the longitudinal profile of the road, and ends with the cross-sections. We start with the centerl…
Understanding the Horizontal Alignment Tools
1. Line Line Curve - Connecting a curve between two lines.
From the main menu go to Roads->Horizontal alignment tools->Line_Line_Curve. AutoCAD/ZWCAD will display: "Select first line", select the first line from the drawing. AutoCAD/ZWCAD will display: "Select second line", select the second line from the drawing. AutoCAD/ZWCAD will display: "Enter cloto in (0)", Insert the length of the transition-curve in the entrance to the arc and press Enter. (Pressing enter without inserting a value will create an arc without a transition curve (Clot. length 0). AutoCAD/ZWCAD will display: "Enter radius", Insert the arc's radius value for the curve and press Enter. AutoCAD/ZWCAD will display: "Enter cloto out (0)", Insert the length of the transition-curve exiting the arc and press Enter. In case a wrong radius value was entered and a tangent between the lines can't be created, CivilCAD will display message: "Tangent not on line".
2. Line Line ReCurve - Connecting a reversed curve between two lines.
3. Line Line Fit Cloto (Radius) - Connecting a curve between two lines without arc, from 2 joined transition curves and by inserting their radius value.
4. Line Line Fit Cloto (Len) - Connecting a curve between two lines without arc, from 2 joined transition curves and by inserting their length value.
5. Line Line Fit ReCloto - Connecting a reversed curve between two lines without arc, from 2 joined transition curves and by inserting their radius value.
6. Line Arc Line Fit Cloto - Connecting a curve from two lines and arc, by transition-curves.
7. Line Arc Line Fit ReCloto - Connecting a reversed curve from two lines and arc, by transition-curves.
8. Arc Arc Fit Tangent (Clo) - Connecting two arcs by tangent and two transition curves and by inserting the transition curves' lengths.
9. Arc Arc Fit Tangent (Len) - Connecting two arcs by tangent and two transition curves and by inserting the tangent's length.
10. Arc Point Fit Tangent - Connecting point to arc by tangent (completing tangent by selecting a point).
11. LineEdge Line Fit Arc - Connecting line-edge to a tangent by arc.
12. LineEdge Point Fit Arc - Connecting line-edge to a specific point by arc.
13. LineEdge Radius Fit Arc - Connecting Line edge to arc by given radius.
14. Arc Arc Fit Cloto -
15. Line_Arc Fit Clotho - Create a clothoid between line and arc.
16. Connect arc - Connect two arcs in a row.
How Did We Do?
Horizontal Alignment Options
Changing the Horizontal Alignment
